reading ebay turbo

[300max]

A turbo on ebay had the following listed specs. I'm looking for a t3/t4 50 trim stage III with a .63 AR. I was wondering is the advertisement for a 50 trim or a 57 trim. Also does wet floating ball bearings mean water cooled? Thanks

******ebay description******

T3/T4 Turbo .50 A/R Stage III / .63 Hot NEW! Description BRAND NEW TURBO

" XS POWER "

STONE MOUNTAIN RACING DEVELOPMENT

T04E TURBOCHARGER

3" INLET DIAMETER

2" OUTLET

WET FLOATING BALL BEARINGS

1/8 NPT OIL INLET

T3 / T4 FOOTPRINT OK !!

SPECS:

COLD SIDE:

.57T COMPRESSOR WHEEL

.50 A/R COMPRESSOR HOUSING

HOT SIDE

.63 A/R TURBINE

[Structure240sx]

seems like they are saying 57 trim wheel. water cooled turbos have a jacket around the housing to keep it cool. the water doesnt touch the bearings. and it says ball bearings which i doubt unless its going for $1k+.